WO2009096517A1 - トルクリミッタ - Google Patents

トルクリミッタ Download PDF

Info

Publication number
WO2009096517A1
WO2009096517A1 PCT/JP2009/051569 JP2009051569W WO2009096517A1 WO 2009096517 A1 WO2009096517 A1 WO 2009096517A1 JP 2009051569 W JP2009051569 W JP 2009051569W WO 2009096517 A1 WO2009096517 A1 WO 2009096517A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
hydraulic expansion
shaft member
expansion chamber
circumferentially extending
Prior art date
Application number
PCT/JP2009/051569
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Akihide Nagayama
Takeshi Miyachi
Original Assignee
Jtekt Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jtekt Corporation filed Critical Jtekt Corporation
Priority to US12/735,601 priority Critical patent/US8424663B2/en
Priority to CN200980103846.5A priority patent/CN101932843B/zh
Priority to EP09705797.0A priority patent/EP2241775B1/de
Publication of WO2009096517A1 publication Critical patent/WO2009096517A1/ja
Priority to US13/845,839 priority patent/US8689960B2/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/04—Fluid-actuated clutches in which the fluid actuates an elastic clutching, i.e. elastic actuating member, e.g. a diaphragm or a pneumatic tube
    • F16D25/042—Fluid-actuated clutches in which the fluid actuates an elastic clutching, i.e. elastic actuating member, e.g. a diaphragm or a pneumatic tube the elastic actuating member rotating with the clutch
    • F16D25/046—Fluid-actuated clutches in which the fluid actuates an elastic clutching, i.e. elastic actuating member, e.g. a diaphragm or a pneumatic tube the elastic actuating member rotating with the clutch and causing purely radial movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
    • F16D7/021—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with radially applied torque-limiting friction surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/065—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutching members having a movement which has at least a radial component
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
    • F16D2001/0906—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using a hydraulic fluid to clamp or disconnect, not provided for in F16D1/091

Definitions

  • the present invention relates to a torque limiter.
  • Patent Document 1 JP-A-7-310753
  • the inner peripheral surface of the cylindrical member is fitted on the outer peripheral surface of the shaft member, pressure oil is supplied to the hydraulic expansion chamber of the cylindrical member, and the inner peripheral surface of the cylindrical member is adjusted by the pressure oil in the hydraulic expansion chamber.
  • the diameter is reduced and the inner peripheral surface is pressed against the outer peripheral surface of the shaft member, and the shaft member and the cylindrical member are frictionally coupled to transmit torque.
  • the shear tube seals the pressure oil in the hydraulic expansion chamber, and a locking member that locks the end of the shear tube is fixed to the shaft member.
  • a load of a predetermined value or more is applied to the shaft member or the cylindrical member, the inner peripheral surface of the cylindrical member slips with respect to the outer peripheral surface of the shaft member, and the position of the shaft member around the axis changes relative to the cylindrical member. Then, the end portion of the shear tube is cut by the locking member, and the pressure oil in the hydraulic expansion chamber is discharged to the outside through an oil drain hole formed in the shear tube. As a result, the inner peripheral surface of the cylindrical member cannot be pressed against the outer peripheral surface of the shaft member, the frictional coupling between the shaft member and the cylindrical member is released, and torque transmission is interrupted.
  • an object of the present invention is to quickly remove the oil in the hydraulic expansion chamber when the inner peripheral surface of the cylindrical member slips with respect to the outer peripheral surface of the shaft member, so that the friction engagement between the shaft member and the cylindrical member can be achieved.
  • An object of the present invention is to provide a torque limiter in which seizure hardly occurs on the surface.
  • the torque limiter of the present invention is A shaft member; A cylindrical member rotatably fitted on the shaft member, The cylindrical member is A hydraulic expansion chamber for pressing the inner peripheral surface of the cylindrical member against the outer peripheral surface of the shaft member; A circumferentially extending chamber that communicates with the hydraulic expansion chamber and protrudes outward in the radial direction of the cylindrical member from the hydraulic expansion chamber, and extends in the circumferential direction of the cylindrical member; The circumferentially extending chamber has a radially extending portion that extends outward in the radial direction from the circumferentially extending chamber, and the shaft member or the cylindrical member has a smaller value than a predetermined value.
  • the end opposite to the circumferentially extending chamber side is sealed, and the hydraulic expansion chamber is expanded by the oil sealed in the hydraulic expansion chamber.
  • the end opposite to the circumferentially extending chamber side The part has an oil drain hole for removing the oil in the hydraulic expansion chamber and releasing the frictional engagement between the shaft member and the cylindrical member by opening to the outside;
  • the hydraulic expansion chamber is inflated, the area of the portion that intersects the hydraulic expansion chamber on the extended surface that extends the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber is the area of the oil drain hole.
  • the cross-sectional area of the opening part to the said circumferential direction extension chamber is larger, It is characterized by the above-mentioned.
  • the torque limiter of the present invention is A shaft member; A cylindrical member rotatably fitted on the shaft member, The shaft member is A hydraulic expansion chamber for pressing the outer peripheral surface of the shaft member against the inner peripheral surface of the cylindrical member; A circumferentially extending chamber that communicates with the hydraulic expansion chamber and protrudes radially inward of the shaft member from the hydraulic expansion chamber and extends in the circumferential direction of the shaft member; It has a radially extending portion that opens to the circumferentially extending chamber and extends radially inward from the circumferentially extending chamber, and is smaller than a predetermined value in the shaft member or the cylindrical member.
  • the end opposite to the circumferentially extending chamber side is sealed, and the hydraulic expansion chamber is expanded by the oil sealed in the hydraulic expansion chamber.
  • the end opposite to the circumferentially extending chamber side The part has an oil drain hole for removing the oil in the hydraulic expansion chamber and releasing the frictional engagement between the shaft member and the cylindrical member by opening to the outside;
  • the hydraulic expansion chamber is inflated, the area of the portion that intersects the hydraulic expansion chamber on the extended surface that extends the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber is the area of the oil drain hole.
  • the cross-sectional area of the opening part to the said circumferential direction extension chamber is larger, It is characterized by the above-mentioned.
  • the extended surface is defined as a band-shaped surface that is defined as a locus drawn by the closed curve when the closed curve that is in contact with the hydraulic expansion chamber on the inner surface is moved in the radial direction.
  • the inventor conducted a number of tests with various configurations of torque limiters on the configuration in which the oil in the hydraulic expansion chamber can be quickly drained when the inner peripheral surface of the cylindrical member slips with respect to the outer peripheral surface of the shaft member. I went through trial and error, and investigated thoroughly. As a result, in the conventional torque limiter configuration, simply increasing the number of oil drain holes or increasing the diameter of the oil drain holes has a limit in reducing the time for draining oil from the hydraulic expansion chamber. It has been found that the time to drain oil cannot be significantly reduced.
  • a circumferentially extending chamber extending in the circumferential direction is formed between the hydraulic expansion chamber and the oil drain hole, and an oil pressure is applied to the extended surface that extends the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber.
  • the reason for drastically shortening the time for draining oil is that the extension surface extending from the inner surface of the circumferentially extending chamber to the hydraulic expansion chamber side has the hydraulic expansion chamber.
  • the oil that has passed through the intersecting part can access the circumferentially extending chamber, and the area of the part that intersects the hydraulic expansion chamber is large, so that the oil can reach the oil draining hole much more easily (access). This is probably because
  • the area of the portion that intersects the hydraulic expansion chamber on the extended surface that extends the inner surface of the circumferential extension chamber toward the hydraulic expansion chamber side is the circumferential extension chamber of the oil drain hole.
  • the circumferentially extending chamber is an annular chamber.
  • the circumferentially extending chamber is an annular chamber, it intersects the hydraulic expansion chamber on an extended surface that extends the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber.
  • the area of the part can be increased. Therefore, as compared with the conventional configuration, when the inner peripheral surface of the cylindrical member slips with respect to the outer peripheral surface of the shaft member, oil can be rapidly and quickly extracted from the hydraulic expansion chamber.
  • the axial length of the shaft member of the circumferentially extending chamber is larger than the diameter of the oil drain hole.
  • the inner peripheral surface of the cylindrical member is a shaft as compared with the conventional configuration.
  • the torque limiter of the present invention when a load of a predetermined value or more is applied to the shaft member or the cylindrical member, and the inner peripheral surface of the cylindrical member slips with respect to the outer peripheral surface of the shaft member, the hydraulic expansion chamber is more quickly performed.
  • the oil can be extracted from the pipe, and the time during which the dynamic friction force acts between the shaft member and the cylindrical member can be shortened. Therefore, seizure of the friction engagement surfaces of the shaft member and the cylindrical member can be suppressed.
  • FIG. 1 is a sectional view in the axial direction of a torque limiter according to a first embodiment of the present invention.
  • This torque limiter has a shaft member 1, a cylindrical member 2, a shear valve 6, a ball bearing 17 and a ball bearing 18.
  • the shaft member 1 includes a main body portion 8 having a substantially cylindrical outer peripheral surface 20 and a locking portion 9 having a substantially L-shaped cross section protruding from the outer surface of the main body portion 8.
  • the outer peripheral surface 20 of the shaft member 1 has one spiral-shaped groove 35 for preventing oil sealing.
  • the spiral groove 35 is open on both sides of the shaft member 1 in the axial direction. Further, the pitch of the spiral groove 35 is 1/10 or more and 1/5 or less of the shaft diameter (outer diameter) of the shaft member 1.
  • the groove 35 plays a role of discharging excess lubricating oil (traction oil described later) through the opening of the groove 35 during power transmission. In other words, the groove 35 serves to prevent the release torque from being greatly reduced below a predetermined value by discharging excess lubricating oil during power transmission and to make the release torque a substantially designed value.
  • the cylinder member 2 includes a first cylinder member 10 and a second cylinder member 11.
  • the first cylindrical member 10 has a substantially cylindrical inner peripheral surface 21 that abuts on the outer peripheral surface 20 of the shaft member 1. Between the outer peripheral surface 20 of the shaft member 1 and the inner peripheral surface 21 of the cylindrical member 2, traction oil, which is a lubricant for preventing seizure, is applied.
  • the spiral groove 35 of the shaft member 1 is open at both axial ends of the contact portion between the outer peripheral surface 20 of the shaft member 1 and the inner peripheral surface 21 of the cylindrical member 2.
  • This traction oil is, for example, an alicyclic functional group such as a cyclopentyl group, a cyclohexyl group, or a cycloheptyl group, a part of these functional groups having an unsaturated bond, or a part of carbon atoms of the functional group. Is replaced with an oxygen atom, a sulfur atom, a nitrogen atom, a functional group formed by crosslinking these functional groups, a functional group having a condensed ring obtained by condensing these functional groups, or These are naphthalene-based synthetic oils and naphthenic mineral oils having polycyclic aromatic functional groups formed using these functional groups.
  • traction oil examples include branched alkylbenzene and alkylnaphthalene, or polyorganosiloxane containing a phenyl group and a cyclohexyl group.
  • Further examples of the traction oil include ⁇ -alkylstyrene dimers and hydrides of ⁇ -alkylstyrene dimers, and F- (CF (CF 3 ) CF 2 O) n.
  • perfluoropolyethers represented by the structural formula of —C 2 F 5 and derivatives of this perfluoropolyether.
  • these traction oils are known as paraffinic mineral oils, hydrocarbon synthetic oils such as poly-alpha olefin oils, ester oils such as diesters and polyol esters, polyalkyl glycol oils, alkyl diphenyl ether oils, silicone oils, perfluoroalkyl polyether oils, etc. It can also be mixed with other lubricants.
  • antioxidants for the purpose of further improving the practicality, antioxidants, rust inhibitors, detergent dispersants, pour point depressants, viscosity index improvers, extreme pressure agents, antiwear additives, corrosion inhibitors, antifoaming agents, metal
  • an additive such as an activator or a colorant may be added.
  • the pressure viscosity index is preferably large.
  • 18 GPa -1 preferably (40 ° C.) or higher, 25GPa -1 (40 °C) or more, and more preferably 32 GPa -1 (40 ° C.) or higher.
  • it is easy to vitrify due to the contact surface pressure between the shaft and the sleeve, it is easy to transmit the driving force, reduce the direct contact between the shaft and the sleeve, prevent the shaft and the sleeve from sticking, When the chamber oil pressure decreases and becomes liquid, torque can be released easily.
  • the second cylindrical member 11 has a substantially cylindrical inner peripheral surface 24 that contacts the substantially cylindrical outer peripheral surface 23 of the first cylindrical member 10.
  • the second cylinder member 11 extends in the axial direction of the shaft member 1 over a predetermined axial length of the shear valve mounting hole 30 and the inner peripheral surface 24 of the second cylinder member 11.
  • a substantially cylindrical hydraulic expansion chamber 26 is provided.
  • the shear valve 6 is inserted into the shear valve mounting hole 30.
  • one end portion of the shear valve 6 protrudes outward in the radial direction from the outer peripheral surface of the second cylindrical member 11.
  • the locking portion 9 having a substantially L-shaped cross section extends in a substantially radial direction and has a radial extending portion 50 facing the end surface of the second tubular member 11 in the axial direction, and the radial extending portion. 50 and an axially extending portion 51 extending in the axial direction along the outer peripheral surface of the second cylindrical member 11. The one end portion of the shear valve 6 is locked by an axially extending portion 51 of the locking portion 9.
  • the shear valve 6 has a tube 27 that is open only at one end.
  • the tube 27 extends substantially in the radial direction of the shaft member 1 in a state where the shear valve 6 is fitted in the shear valve mounting hole 30.
  • one end portion on the closed side of the tube 27 protrudes outward in the radial direction from the outer peripheral surface of the second cylindrical member 11.
  • the opening on the opposite side of the tube 27 from the closed side communicates with one end in the axial direction of the hydraulic expansion chamber 26 via the oil passage 37 and the circumferentially extending chamber 38.
  • the tube 27 and the oil passage 37 constitute an oil drain hole, and the oil passage 37 constitutes a radially extending portion of the oil drain hole.
  • the shear valve 6 side of the hydraulic expansion chamber 26 is a sealed space.
  • the ball bearing 17 includes an inner ring 40 fitted and fixed to the outer surface of the shaft member 1, an outer ring 41 fitted and fixed to the inner surface of the second cylindrical member 11, a raceway surface of the inner ring 40, and a raceway surface of the outer ring 41. And a ball 42 disposed between them.
  • the ball bearing 18 includes an inner ring 44 fitted and fixed to the outer surface of the shaft member 1, an outer ring 45 fitted and fixed to the inner surface of the first cylindrical member 10, a raceway surface of the inner ring 44, and the outer ring 45. And a ball 46 disposed between the raceway surfaces.
  • the ball bearings 17 and 18 are configured to rotatably support the shaft member 1 with respect to the cylindrical member 2 when the shaft member 1 rotates relative to the cylindrical member 2.
  • FIG. 2 is a schematic enlarged view showing the connection relationship between the shear valve 6, the oil drain hole (configured by the tube 27 and the oil passage 37), the circumferential extension chamber 38 and the hydraulic expansion chamber 26.
  • FIG. 3 is a schematic enlarged view around the circumferentially extending chamber 38.
  • the oil passage 37 serving as a radially extending portion of the oil drain hole extends in the radial direction of the cylindrical member 2.
  • the circumferentially extending chamber 38 opens to the hydraulic expansion chamber 26 and communicates with the hydraulic expansion chamber 26.
  • the circumferentially extending chamber 38 has a substantially rectangular shape in cross section in the axial direction.
  • the circumferentially extending chamber 38 extends in an arc shape in a cross section perpendicular to the axial direction.
  • the cross-sectional area of the cut surface is the shaft member 1 of the cut surface. Regardless of the distance from the central axis, the cross-sectional area of the cross section of the oil passage 37 is larger.
  • the oil passage 37 is a passage having a circular cross section. As shown in FIG. 4, the diameter of the cross section of the oil passage 37 is a (cm), while the axial dimension of the circumferentially extending chamber 38 is circumferentially extended as shown in FIG. Regardless of the circumferential position of the occupancy chamber 38, the constant value b (cm) is larger than the diameter a (cm) of the oil passage 37.
  • the circumferentially extending chamber 38 (more precisely, the radially innermost portion of the circumferentially extending chamber 38) has a constant value c larger than the diameter a (cm) of the oil passage 37. (Cm) extends in the circumferential direction.
  • the oil passage 37 is a part of the following portion, that is, a part of the inner surface located radially outward of the circumferentially extending chamber 38, and is located at a substantially central portion in the axial direction. An opening is made in a portion located substantially at the center.
  • a portion 70 indicated by hatching is a cross section of an opening to the circumferentially extending chamber 38 of the oil passage 37 that forms a part of the oil drain hole, and indicates a portion that is part of the cylindrical surface.
  • a portion 80 indicated by hatching in FIG. 5 is sealed after oil for hydraulic expansion is injected into the hydraulic expansion chamber 26, thereby reducing the diameter of the inner peripheral surface 21 of the first cylindrical member 10.
  • the circumferential surface 21 is pressed against the outer circumferential surface 20 of the shaft member 1, and the inner surface of the circumferentially extending chamber 38 is extended toward the hydraulic expansion chamber 26 in a state where the shaft member 1 and the cylindrical member 2 are frictionally coupled.
  • a portion of the extended surface that intersects with the hydraulic expansion chamber 26 (strictly speaking, a closed curve that is a portion in contact with the hydraulic expansion chamber 26 on the inner surface of the circumferential extension chamber 38 is drawn when moved in the radial direction. Of the belt-like locus, a portion intersecting with the hydraulic expansion chamber 26 (extension of the inner surface is used in this sense)) is shown.
  • the area of the portion 80 that intersects the hydraulic expansion chamber 26 on the extended surface obtained by extending the inner surface of the circumferential extension chamber 38 toward the hydraulic expansion chamber 26 is that of the opening of the oil passage 37 to the circumferential extension chamber 38. It is larger than the area of the part 70 which consists of a part of cylindrical surface which is a cross section.
  • the shaft member 1 or the cylindrical member 2 when a load less than a predetermined value is applied to the shaft member 1 or the cylindrical member 2 (the load within a range where torque is transmitted), the shaft member 1 or the cylindrical member 2 is injected into the hydraulic expansion chamber 26 via a coupler (not shown). With the sealed oil for hydraulic expansion, the inner peripheral surface 21 of the first cylindrical member 10 is reduced in diameter and the inner peripheral surface 21 is pressed against the outer peripheral surface 20 of the shaft member 1. Are coupled to each other to transmit torque between the shaft member 1 and the cylindrical member 2.
  • a load greater than a predetermined value is applied to the shaft member 1 or the cylindrical member 2 (a load larger than the range in which torque is transmitted), and the outer peripheral surface 20 of the shaft member 1 is the inner peripheral surface of the first cylindrical member 10.
  • the locking portion 9 connects the one end portion of the shear valve 6 (the outer end portion in the radial direction of the tube 27). The oil for hydraulic expansion in the hydraulic expansion chamber 26 is cut and discharged to the outside through the shear valve 6 with one end cut off.
  • the present inventor conducted a number of tests with various configurations of torque limiters for a configuration that can quickly drain the oil in the hydraulic expansion chamber when the inner peripheral surface of the cylindrical member slips with respect to the outer peripheral surface of the shaft member. I went through trial and error, and investigated thoroughly. As a result, in the conventional torque limiter configuration, simply increasing the number of oil drain holes or increasing the diameter of the oil drain holes cannot greatly reduce the time for draining oil from the hydraulic expansion chamber, It has been found that the possibility that seizure occurs on the friction engagement surfaces of the member and the cylindrical member cannot be significantly reduced.
  • a circumferentially extending chamber extending in the circumferential direction is formed between the hydraulic expansion chamber and the oil drain hole, and an oil pressure is applied to the extended surface by extending the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber.
  • the area of the portion 80 intersecting the hydraulic expansion chamber 26 on the extended surface obtained by extending the inner surface of the circumferential extension chamber 38 toward the hydraulic expansion chamber 26 is the oil drain hole. Since this is a cross section of the opening to the circumferentially extending chamber 38 and is larger than the area of the portion 70 formed of a part of the cylindrical surface, a load of a predetermined value or more is applied to the shaft member 1 or the cylindrical member 2, and the cylindrical member.
  • the inner peripheral surface 21 of 2 slips with respect to the outer peripheral surface 20 of the shaft member 1
  • the oil can be drained from the hydraulic expansion chamber 26 more quickly, and dynamic friction is generated between the shaft member 1 and the cylindrical member 2.
  • the time when the force acts can be remarkably shortened. Therefore, seizure of the friction engagement surfaces of the shaft member 1 and the cylindrical member 2 can be suppressed.
  • the torque limiter of the first embodiment since the axial length of the shaft member 1 of the circumferentially extending chamber 38 is larger than the diameter of the oil passage 37, compared to the conventional configuration, the oil can be drained from the hydraulic expansion chamber 26 more quickly.
  • the oil sealing preventing groove 35 is provided.
  • the oil sealing preventing groove may be omitted.
  • the traction oil is sealed between the outer peripheral surface 20 of the shaft member 1 that performs frictional engagement and the inner peripheral surface 21 of the cylindrical member 2.
  • a lubricant other than traction oil such as turbine oil may be sealed between the outer peripheral surface of the shaft member that performs frictional engagement and the inner peripheral surface of the cylindrical member.
  • the circumferentially extending chamber 38 has a substantially rectangular cross section.
  • the circumferentially extending chamber has a shape other than a rectangular cross section such as a triangular cross section.
  • the shape may also be
  • the area of the portion of the extended surface extending from the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber that intersects the hydraulic expansion chamber is the cross-sectional area of the opening to the circumferentially extending chamber of the oil drain hole. Any shape may be used as long as it is larger.
  • one shear tube or a plurality of shear tubes may be provided at equal intervals in the circumferential direction. In the present invention, a plurality of shear tubes may be provided at unequal intervals in the circumferential direction.
  • a plurality of shear tubes may be communicated with one oil passage 37, or an oil passage 37 may be provided for each shear tube.
  • one oil passage 37 may be provided with one circumferential extending chamber 38, or a plurality of oil passages 37 may be provided with one circumferential extending chamber 38,
  • one circumferentially extending chamber 38 is provided in the plurality of oil passages 37, it intersects with the hydraulic expansion chamber on an extended surface that extends the inner surface of one circumferentially extending chamber 38 toward the hydraulic expansion chamber 26.
  • the area of the portion 80 is the sum of the areas of the portion 70 formed of a part of a cylindrical surface that is a cross section of the opening to the circumferential extending chamber 38 of the plurality of oil passages 37 that open to one circumferential extending chamber 38. It suffices if the area is larger than.
  • the cylinder member 2 includes the first cylinder member 10 having the inner peripheral surface 21 in contact with the outer peripheral surface 20 of the shaft member 1 and a hydraulic expansion chamber that encloses oil for hydraulic expansion.
  • the cylindrical member has an inner peripheral surface that contacts the outer peripheral surface of the shaft member, and a hydraulic expansion chamber that encloses oil for hydraulic expansion.
  • An integral cylindrical member may be used.
  • the cutting is performed when the circumferential extension chamber connected to the radially extending portion is cut by a plane perpendicular to the extending direction of the oil passage as the radially extending portion. If the cross-sectional area of the surface is larger than the cross-sectional area of the cross section of the radially extending portion of the oil passage regardless of the distance from the central axis of the shaft member of the cut surface, It goes without saying that it is possible to remove the swiftness more quickly.
  • FIG. 6 is a view corresponding to FIG. 5 in the torque limiter of the second embodiment of the present invention.
  • the torque limiter of the second embodiment is different from the torque limiter of the first embodiment only in the shape of the circumferential extension chamber, and the configuration other than the circumferential extension chamber is all the same as the torque limiter of the first embodiment. is there.
  • the circumferentially extending chamber of the second embodiment exists over the entire circumference of the cylindrical member.
  • the inner peripheral surface 21 of the first cylindrical member 10 is reduced in diameter and is sealed.
  • An extension obtained by extending the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber in a state where the peripheral surface 21 is pressed against the outer peripheral surface 20 of the shaft member 1 and the shaft member 1 and the cylindrical member 2 are frictionally coupled.
  • a portion 90 that intersects the hydraulic expansion chamber on the surface includes two portions 63 and 64 that face each other in the axial direction of the cylindrical member and are parallel to each other.
  • Each of the portions 63 and 64 is from the inner region of the first circle, the center of the first circle is the same as the center of the first circle, is in the same plane as the first circle, and the radius is the first circle. It consists of a portion excluding the inner area of the second circle which is smaller.
  • the area of the portion 90 that intersects the hydraulic expansion chamber on the extended surface obtained by extending the inner surface of the circumferentially extending chamber that is the sum of the area of the portion 63 and the area of the portion 64 toward the hydraulic expansion chamber is as follows. It is larger than the area of the part which consists of a part of cylindrical surface which is the cross section of the opening part to the circumferential direction extension chamber of the oil passage 37 which makes a part of the oil drain hole which opens to a direction extension chamber.
  • the length in the radial direction is the thickness in the radial direction of the hydraulic expansion chamber when the shaft member and the cylinder member are frictionally engaged, and when no oil is put in the hydraulic expansion chamber. Needless to say, this corresponds to the difference between the thickness in the radial direction of the hydraulic expansion chamber.
  • the circumferentially extending chamber is an annular chamber, it intersects the hydraulic expansion chamber on the extended surface that extends the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber.
  • the area of the portion 90 can be increased, and the passage cross-sectional area of the oil flowing into the oil drain hole can be made uniform in the circumferential direction. Therefore, as compared with the conventional configuration, when the inner peripheral surface of the cylindrical member slips with respect to the outer peripheral surface of the shaft member, oil can be rapidly and quickly extracted from the hydraulic expansion chamber.
  • the circumferentially extending chamber has a substantially rectangular shape in cross section.
  • the circumferentially extending chamber has a shape other than the rectangular shape such as a triangular cross section. There may be.
  • the area 90 of the portion intersecting the hydraulic expansion chamber on the extended surface obtained by extending the inner surface of the circumferential extension chamber to the hydraulic expansion chamber side is the opening portion of the oil passage in the circumferential extension chamber. Any shape may be used as long as it is larger than the cross-sectional area.
  • one shear tube or a plurality of shear tubes may be provided at equal intervals in the circumferential direction.
  • a plurality of shear tubes may be provided at unequal intervals in the circumferential direction.
  • the area 90 of the portion intersecting the hydraulic expansion chamber on the extended surface obtained by extending the inner surface of the circumferentially extending chamber toward the hydraulic expansion chamber side extends in the circumferential direction of the plurality of oil passages. What is necessary is just to become larger than the total area of the part which consists of a part of cylindrical surface which is a cross section of the opening part to a occupancy room.
  • FIG. 7 is a sectional view in the axial direction of the torque limiter according to the third embodiment of the present invention.
  • an annular hydraulic expansion chamber 126 is formed in the shaft member 101, and the hydraulic expansion chamber 126 expands in the radial direction, so that the outer peripheral surface 123 of the shaft member 101 becomes the inner periphery of the cylindrical member 102.
  • the point of frictional engagement with the surface 124 is greatly different from the torque limiter of the first embodiment.
  • the torque limiter of the third embodiment includes a shaft member 101, a cylindrical member 102, a shear valve 106, a ball bearing 117, and a ball bearing 118.
  • the shaft member 101 includes a shaft main body 161 having a substantially cylindrical outer peripheral surface 120 and an annular member 110.
  • the inner peripheral surface 121 of the annular member 110 is fitted with the outer peripheral surface 120 of the shaft main body 161, and the end surface is locked and fixed with a bolt 145.
  • the annular member 110 has a substantially cylindrical outer peripheral surface 123.
  • the cylindrical member 102 has a locking portion 109 protruding from the outer surface of the cylindrical member 102 and an inner peripheral surface 124 as a peripheral surface.
  • An inner peripheral surface 124 of the cylindrical member 102 has a spiral oil-seal prevention groove 135 similar to that of the first embodiment.
  • the spiral groove 135 is open on both sides in the axial direction of the friction engagement portion of the shaft member 101 with the cylindrical member 102. Further, the pitch of the spiral groove 135 is 1/10 or more and 1/5 or less of the shaft diameter (outer diameter) of the shaft member 101.
  • the substantially cylindrical inner peripheral surface 124 of the cylindrical member 102 is frictionally coupled to the outer peripheral surface 123 of the shaft member 101 (specifically, the annular member 110) during torque transmission. Between the outer peripheral surface 123 of the shaft member 101 and the inner peripheral surface 124 of the cylindrical member 102, traction oil or a mixture thereof, which is the same as the lubricant for preventing seizing, is applied as in the first embodiment. Yes.
  • the annular member 110 has a shear valve mounting hole 130 and an annular hydraulic expansion chamber 126 extending substantially in the axial direction of the shaft member 101 over a predetermined axial length of the outer peripheral surface 123 of the annular member 110. is doing.
  • the shear valve 106 is fitted in the shear valve mounting hole 130. In a state where the shear valve 106 is fitted in the shear valve mounting hole 130, one end portion of the shear valve 106 protrudes outward in the axial direction from the end surface of the annular member 110.
  • the locking portion 109 extends in the radial direction along the end surface of the annular member 110. The one end portion of the shear valve 106 is locked by a locking portion 109.
  • the shear valve 106 has a tube 127 that is open only at one end.
  • the tube 127 extends substantially in the axial direction of the shaft member 101 in a state where the shear valve 106 is fitted in the shear valve mounting hole 130.
  • one end portion on the closed side of the tube 127 protrudes outward in the axial direction from the end surface of the annular member 110.
  • the opening of the tube 127 opposite to the closed side is connected to the hydraulic expansion chamber 126 via the oil passage 137 and the circumferential extension chamber 138.
  • the oil passage 137 includes an axially extending portion 160 and a radially extending portion 161.
  • the axially extending portion 160 communicates with the axially inner opening of the tube 127.
  • the axially extending portion 160 extends in the axial direction.
  • the radially extending portion 161 communicates with the opening on the opposite side of the axially extending portion 160 from the tube 127 side in the axial direction.
  • the radially extending portion 161 extends in the radial direction.
  • An opening on the radially outer side of the radially extending portion 161 opens on the inner surface of the radially extending chamber 138 on the radially inner side.
  • the tube 127 and the oil passage 137 constitute an oil drain hole.
  • the circumferentially extending chamber 138 extends over the entire circumference in the circumferential direction.
  • the circumferentially extending chamber may not extend over the entire circumference but may extend by a predetermined length in the circumferential direction.
  • the diameter of the outer peripheral surface 123 of the annular member 110 is increased, and the outer peripheral surface 123 is pressed against the inner peripheral surface 124 of the cylindrical member 102, thereby
  • the area of the portion that intersects the hydraulic expansion chamber 126 on the extended surface that extends the inner surface of the circumferentially extending chamber 138 toward the hydraulic expansion chamber 126 in a state in which the cylinder 101 and the cylindrical member 102 are frictionally coupled, It is larger than the area of the part which consists of a part of cylindrical surface which is a cross section of the opening part to the circumferential direction extension chamber 138 of the radial direction extension part 161 which makes a part of oil drain hole.
  • a radially extending portion that forms a part of the plurality of oil drain holes may open into the circumferential extending chamber.
  • the hydraulic expansion chamber is formed on the extended surface extending the inner surface of the circumferential extending chamber toward the hydraulic expansion chamber.
  • 126 is an area of a portion composed of a part of a cylindrical surface that is an area of an opening to a circumferentially extending chamber of a radially extending portion that forms a part of a plurality of oil drain holes. It only needs to be larger than the total area.
  • the cylindrical member 102 is compared with the conventional configuration, as in the first and second embodiments.
  • the oil can be remarkably removed from the hydraulic expansion chamber 126, and the outer peripheral surface (friction engagement surface) 123 of the shaft member 101 and the cylindrical member can be removed.
  • seizure will occur on the inner peripheral surface (friction engagement surface) 124 of 102 can be drastically reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
PCT/JP2009/051569 2008-01-31 2009-01-30 トルクリミッタ WO2009096517A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/735,601 US8424663B2 (en) 2008-01-31 2009-01-30 Torque limiter
CN200980103846.5A CN101932843B (zh) 2008-01-31 2009-01-30 扭矩限制器
EP09705797.0A EP2241775B1 (de) 2008-01-31 2009-01-30 Drehmomentbegrenzer
US13/845,839 US8689960B2 (en) 2008-01-31 2013-03-18 Torque limiter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008020902A JP5286806B2 (ja) 2008-01-31 2008-01-31 トルクリミッタ
JP2008-020902 2008-01-31

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US12/735,601 A-371-Of-International US8424663B2 (en) 2008-01-31 2009-01-30 Torque limiter
US13/845,839 Division US8689960B2 (en) 2008-01-31 2013-03-18 Torque limiter

Publications (1)

Publication Number Publication Date
WO2009096517A1 true WO2009096517A1 (ja) 2009-08-06

Family

ID=40912860

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/051569 WO2009096517A1 (ja) 2008-01-31 2009-01-30 トルクリミッタ

Country Status (5)

Country Link
US (2) US8424663B2 (de)
EP (1) EP2241775B1 (de)
JP (1) JP5286806B2 (de)
CN (1) CN101932843B (de)
WO (1) WO2009096517A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112727944A (zh) * 2020-12-25 2021-04-30 中国船舶重工集团公司第七0三研究所 一种高转速下受控脱开型离合器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5151484B2 (ja) * 2008-01-08 2013-02-27 株式会社ジェイテクト トルクリミッタ
US11424040B2 (en) * 2013-01-03 2022-08-23 Aetna Inc. System and method for pharmacovigilance
JP6286917B2 (ja) * 2013-08-05 2018-03-07 株式会社ジェイテクト トルクリミッタ
CN110259841A (zh) * 2019-07-17 2019-09-20 山西晋鼎高科机电设备有限公司 限矩型联轴器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510191A (en) * 1978-06-15 1980-01-24 Falk Ab Curt Joint
JPS58135526U (ja) * 1982-03-10 1983-09-12 株式会社日立製作所 油圧嵌め装置
JPS63130924A (ja) * 1986-11-12 1988-06-03 ヨット・エム・フォイト・ゲーエムベーハー 安全軸継手
JPH03129124A (ja) * 1989-09-19 1991-06-03 Metalform Safeset Ab 継手
JPH07310753A (ja) 1994-05-19 1995-11-28 Sumitomo Metal Ind Ltd 液圧式トルク制限軸継手のスベリ検知機構
WO2007114210A1 (ja) * 2006-03-30 2007-10-11 Jtekt Corporation トルクリミッタ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637345A (en) * 1947-08-16 1953-05-05 Gen Tire & Rubber Co Torque transmitting device employing extensible resilient clutch elements
AT367878B (de) * 1980-09-10 1982-08-10 Voest Alpine Ag Rutschkupplung
JPS58135526A (ja) 1982-02-08 1983-08-12 クラリオン株式会社 デ−タ入力装置
JPH03282017A (ja) * 1990-03-28 1991-12-12 Bridgestone Corp 回転力の断続・停止装置
US5366055A (en) * 1993-04-02 1994-11-22 Eaton Corporation Coupling assembly component
KR20080108583A (ko) * 2006-03-30 2008-12-15 가부시키가이샤 제이텍트 토크 리미터

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5510191A (en) * 1978-06-15 1980-01-24 Falk Ab Curt Joint
JPS58135526U (ja) * 1982-03-10 1983-09-12 株式会社日立製作所 油圧嵌め装置
JPS63130924A (ja) * 1986-11-12 1988-06-03 ヨット・エム・フォイト・ゲーエムベーハー 安全軸継手
JPH03129124A (ja) * 1989-09-19 1991-06-03 Metalform Safeset Ab 継手
JPH07310753A (ja) 1994-05-19 1995-11-28 Sumitomo Metal Ind Ltd 液圧式トルク制限軸継手のスベリ検知機構
WO2007114210A1 (ja) * 2006-03-30 2007-10-11 Jtekt Corporation トルクリミッタ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2241775A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112727944A (zh) * 2020-12-25 2021-04-30 中国船舶重工集团公司第七0三研究所 一种高转速下受控脱开型离合器

Also Published As

Publication number Publication date
JP5286806B2 (ja) 2013-09-11
US8689960B2 (en) 2014-04-08
JP2009180321A (ja) 2009-08-13
US8424663B2 (en) 2013-04-23
US20130248319A1 (en) 2013-09-26
CN101932843A (zh) 2010-12-29
EP2241775A1 (de) 2010-10-20
EP2241775B1 (de) 2015-08-12
CN101932843B (zh) 2013-10-23
EP2241775A4 (de) 2013-07-24
US20110002729A1 (en) 2011-01-06

Similar Documents

Publication Publication Date Title
CN101410646B (zh) 扭矩限制器
JP5286806B2 (ja) トルクリミッタ
US20150147477A1 (en) Grease & method for applying grease
JP5634661B2 (ja) 転がり軸受
CN101410643B (zh) 扭矩限制器
JP5012631B2 (ja) 軸連結装置およびトルクリミッタ
JP2009250377A (ja) グリース封入外輪回転用転がり軸受
JP5347376B2 (ja) 軸連結装置およびトルクリミッタ
JP2008215469A (ja) トルクリミッタ
JP2008240795A (ja) トルクリミッタ
JP2010048361A (ja) 軸連結装置およびトルクリミッタ
JP4239541B2 (ja) ベルト式無段変速機用転がり軸受
US20150060208A1 (en) Machine element & method
JP2000120700A (ja) 電気掃除機のモータ用玉軸受
JP2009204126A (ja) 一方向クラッチ内蔵型回転伝達装置
JP2008223888A (ja) トルクリミッタ
JP2008223983A (ja) トルクリミッタ
JP2005308228A (ja) 転がり軸受
JP2008120855A (ja) 一方向クラッチ
JP2009121689A (ja) 転がり軸受
JP2008121765A (ja) アイドラプーリ用軸受
JP2005083421A (ja) 転がり軸受
JP2008121764A (ja) アイドラプーリ用軸受
JP2006064136A (ja) 一方向クラッチ内蔵型回転伝達装置
JP2018012742A (ja) 潤滑油組成物

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980103846.5

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09705797

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12735601

Country of ref document: US

Ref document number: 2009705797

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE